Title (en)

SUPERABSORBENT THERMOPLASTIC COMPOSITIONS

Publication

EP 0272682 A3 19890125 (EN)

Application

EP 87119039 A 19871222

Priority

• US 16107388 A 19880226
• US 94471386 A 19861222
• US 94540586 A 19861222
• US 94575386 A 19861222

Abstract (en)

[origin: EP0272682A2] A superabsorbent, thermoplastic polymeric composition comprises: (A) from about 86 to about 98 percent by weight, based on the total weight of the composition, of a poly(oxyethylene) diol soft segment having a weight average molecular weight in the range of from about 5,000 to about 50,000; and (B) from about 2 to about 14 percent by weight, based on the total weight of the composition, of a hard segment which has a melting point above ambient temperature and below the temperature at which decomposition of either the composition or the soft segment takes place, is essentially insoluble in water, and phase separates from the soft segment, said hard segment being selected from the group consisting of polyurethanes, polyamides, polyesters, polyureas, and combinations thereof; wherein the soft and hard segments are covalently bound together by means of urethane, amide, ester, or secondary urea linkages or combinations thereof. The composition can be a component of a stable, nonreactive, thermoplastic polymer blend and of a nonwoven superabsorbent web of fibers. The web may comprise a plurality of substantially randomly deposited monofilaments and can be prepared by meltblowing, coforming and spunbonding processes. m

IPC 1-7

C08G 81/00; C08L 87/00; C08L 23/00; D04H 3/00; D04H 1/00

IPC 8 full level

A61F 13/15 (2006.01); A61L 15/60 (2006.01); C08G 18/10 (2006.01); C08G 18/48 (2006.01); C08G 81/00 (2006.01); D04H 1/42 (2012.01); A61F 13/20 (2006.01)

CPC (source: EP US)

A61F 13/53 (2013.01 - EP); A61L 15/60 (2013.01 - EP); C08G 18/10 (2013.01 - EP); C08G 18/4833 (2013.01 - EP); C08G 81/00 (2013.01 - EP); D04H 1/4291 (2013.01 - EP); D04H 1/4358 (2013.01 - EP); D04H 1/43828 (2020.05 - EP US); D04H 1/43832 (2020.05 - EP US); D04H 1/43835 (2020.05 - EP US); A61F 13/202 (2013.01 - EP); A61F 2013/530131 (2013.01 - EP); A61F 2013/530481 (2013.01 - EP)

Citation (search report)

• [X] EP 0165756 A2 19851227 - SMITH & NEPHEW ASS [GB]
• [A] EP 0156035 A2 19851002 - SNIA FIBRE [IT]
• [A] US 4622263 A 19861111 - ANDO KATSUTOSHI [JP], et al
• [A] EP 0152049 A2 19850821 - BAYER AG [DE]
• [A] US 4546147 A 19851008 - WOODBREY JAMES C [US], et al
• [A] EP 0101427 A2 19840222 - MONSANTO CO [US]
• [A] EP 0174775 A1 19860319 - MINNESOTA MINING & MFG [US]
• [A] EP 0164435 A1 19851218 - KIMBERLY CLARK CO [US]
• [A] EP 0160572 A2 19851106 - PERSONAL PRODUCTS CO [US]
• [A] EP 0173333 A2 19860305 - KIMBERLY CLARK CO [US]
• [A] GB 2053302 A 19810204 - FREUDENBERG C
• [AD] US 3849241 A 19741119 - BUTIN R, et al
• [AD] US 4100324 A 19780711 - ANDERSON RICHARD A, et al
• [A] KAUTSCHUK UND GUMMI
• [A] BLOCK COPOLYMERS

Designated contracting state (EPC)

AT BE CH DE ES FR GB GR IT LI LU NL SE

DOCDB simple family (publication)

EP 0272682 A2 19880629; EP 0272682 A3 19890125

DOCDB simple family (application)

EP 87119039 A 19871222